One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,6)(3,7,8,5)(9,10,13,15)(11,12,16,14)(17,18,20,22)(19,21,23,24)(25,26)(27,30)(28,32)(29,31)(1,3)(2,5)(4,8)(6,7)(9,11,13,16)(10,14,15,12)(19,23)(21,24)(25,27,29,32)(26,30,31,28)(2,6)(5,7)(10,15)(11,16)(17,18)(19,21)(20,22)(23,24)(25,28)(26,27)(29,30)(31,32) involution — undirected(1,3)(2,5)(4,8)(6,7)(9,12,13,14)(10,16,15,11)(17,19)(18,21)(20,23)(22,24)(25,27)(26,28)(29,32)(30,31)(1,2)(3,5)(4,6)(7,8)(9,10)(11,14)(12,16)(13,15)(17,18)(19,21)(20,22)(23,24)(25,28)(26,27)(29,30)(31,32) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.